Boiler baffle



Oct. 26, 1926. 1,604,829

N. HUBBARD BOILER RAFFLE Filed August 5. 1922 INVENTOR.

I Mo- ATTORNEYS.

Patented Got. 26, 1926.

MNETF.

its rm NURMAN HUBBARD, 0F ELIZABETH, NEW JER$EY, ASSIGNOB TO THE BABGGCK & WILGOX COMPANY, OF BAYONNE, NEW JERSEY, A CDRIORATION OF NEW JERSEY.

1201mm RAFFLE.

Application filed August 3, 1922. Serial No. 579,507.

My present invention relates .to boiler walls or baflies particularly of the type in which the baffle extends longitudinally of a row of water tubes or the like and will best be understood from thefollowing description and the appended drawings, in which Fig. 1 is a portion of a known type of boiler, embodying one application of my invention to form abaflie on the lower row of tubes, a partial longitudinal section of the baffle being taken on the line l1 ofFig. 3; Fig. 2 is a perspective of the two elements. wh ch constitute a unit in the illustrative form of battle; Fig. 3 is a cross-section of the illustrative form of battle, showing the manner in which it may be removed or installed; Figs. l, 5, 6, 7, 8 and 9 are, respectively, side and end elevations of variations in the length and shape of the two elements to accommodate them to various conditions met with in practice.

Like reference characters parts in the several views.

indicate like In the illustrative form of my invention,

the bafileis made up of a plurality of units, each composed of a member which I have termed the hook member and the other the filling piece. The hookmember is curved to a radius of the boiler tube, as shown at 10,

in an arc, in the illustrative form, of approximately 120, and is straight from a tangent with the horizontal centerline of the tube to a point just inside the. bottom of the tube, asshown at 12, and thence, in the illustrative form, is flared out equally, on

both sides at its other and 14:.

The filling member 15, in cross-section, has sloping sides corresponding to the sloped end, as shown at 13 sides 13 and 14: of the hook member. The

width and height of the wedge member is such that it may be inserted between twoof the hook members suspended on two adjacent boiler tubes, with itsupper surface in contact with the bottom of one of the boiler .tubes, and, upon being released, will fall by gravity to a position where. its lower or narrow face is in line with the bottoms of the hook members. In this manner a num-' ber of the filling members, alternating with 1. This may be accomplished by the form' of book member and filling piece shown in Figs. 6 to 9, inclusive,the hook portion being curved preferably on the top only to fit in between the next adjacent row of tubes of the boiler, the lower face of the body portion preferably being similarly curved (see Fig. 6 while the inside portion of the hook which fits on the tube may be madeas a cylindrical opening so that the hook contacts 1 with the tube only at the opposite ends of the piece. Similarly the filling piece 15 may have its lower surface curved to adapt it to a curved surface for the face of the baffle at that point. -At other portions of the baffle, instead of curving the hook portion 10', the ends of the hook member and the filling piece may be angled as shown best in Fig. 4-.

The advantages of my arrangement will.

be obvious to those skilled in the art. baffle may be readily built up which will extend longitudinally of the water tubes and the parts of which will have considerable strength, For instance, the straight portion 12 may have athickness almost as great as the distance between the water tubes. l\1oreover,the'baiile may be readily built up and will not fall to pieces,the sloping sides of the filling piece 15 being such that when the filling pieces are supported on the hook members,the filling piece may movedownward by gravity until .wedged between the adjacent walls of a pair 01 body portions 11. Similarly, any portion of the bafiie may be .readily removed in the manner shown in Fig. '3. p The filling pieces for two or more hook members on adjacent tubes will be first removed and then the hook members may be swung as indicated in Fig. 3, so that one of the hook members, after completing its rotation around the axis of its tube, may be withdrawn through the space between the tubes. By attaching a bafile to a row of tubesbymeans of hook members of uniform thickness, only one of which hook members It will ,beunder-stood that occupies a space between-adjacent'tubes and partially'encircles one tube, there can be no fusion of the baffle members that would lock them between the tubes and such as, occurs in the case of two hook'or wedge members occupying the space between two tubes and contacting with two tubes instead of one, removal and replacement of baffle is greatly facilitated.

While, preferably, I make the side walls 13, 14 sloping so that the filling piece may wedge itself between them and produce a tight fit by taking up any inequalities due to manufacture, nevertheless, if desired, the cooperating faces between the filling pieces and the body portions may be of any other suitable form, as for instance, stepped so that a projecting ledge on 15 will extend over a corresponding ledge on the body portion 11 of the hook member.

the form shown is merely illustrative and that the embodiment of my invention may be widely varied.

I claim 1. In aboiler having tubes, a wall comprising a plurality of book members each having a hook portion arranged to extend between a pair of tubes and partially around one of them, and a body portion at the side opposite the hook portion, and a plurality of filling pieces adaptedto fit between the body portions ofadjacent hook members and form with .said'body portions a substantially continuous wallsurface, one hook member only being located betweenadjacent tubes andwith the end of the hook portion free.

2. In a boiler having tubes, longitudinal baffle comprising a plurality of hook mem- 'bers each having a hook portion arranged to extend between a pair of tubes and partially around one of them, a body portion at the side opposite the hook portion, and a plurality of filling pieces adapted to fitbetween the body portions of adjacent 'hook members and form with said body portions (L-substantially continuous bafile surface the sides of said body portions and of said filling pieces being interlocked to prevent motionof the filling pieces in a direction away from the tubes, one hook member only being 'located between adjacent tubes and with the .end of the hook portion free.

3. In a boiler having tubes, a longitudinal baffle comprising aplurality of hookmembers. each having aihook portion arranged to extend between a pair ,oftubes and partially around one of them, ,a body portion at the side opposite the hook portion, and a plurality off'filling pieces adapted to fit.

between the body portions of 'ad-j acenthook members and form with; said body 1 01 1511 118 a substantially continous baflie surface, the

sides of said body portions and ofsaid,; fillpieces being-reversely sloped' 'to lii'event side.

motion of the filling pieces in a direction filling piece, trapezoidal in cross-section and adapted to fit between the sides of the body portions of a pair of adjacent hook members.

In a longitudinal baffle for a series of spaced parallel tubes, a hook member having a body portion trapezoidal in crosssection and a'hook integral with the body portion and adapted to-exten'd through the space between a pair of'tubesand partially around one of them, the wider part of the trapezoid being farthest away from the hook, and a filling piece, trapezoidal in ClOSSvSQCtlOI'l and adapted vto fit between the sides of the body portions of a pair of ad jace'nt hook members, t-hebody portions and .thefilling pieces being arranged to permit a'hook member tobe rotated on its tube and straight portion in the space between the tubeswith'the-body portion opposite such space, the sides of the body portion being adapted tofcooperate with the sides of the -,body portions of an adjacent hookmeinber, to support filling pieces near the tubes, and

filling pieces adapted to cooperate with said body portions.

7, In a baflle for a series of spaced tubes, memberspassi'ng between the tubes and each formed at" its'uppe'r end with a hook adapted to engage the upper side of'one of said tubes and at its other endand beneath the tubes thickened by flaring the same outwardly, and filling-pieces adapted to fit between the flared ends of said first named members 'andthereby *lock the same'in position on the tubes-and forming therewith a baflie with a substantially continuous wall-on one 8; Ina baiflle fora series of spaced tubes,

members passing between the tubes and each formed at its upper end with a hook adapted to engage the upper side of one of said tubes and at its other end and beneath the tubes thickened. by flaring the same outwardly, and filling pieces adapted to fit between the flared ends of said first named members and therebylock the same in position on the tubes, and forming therewith a battle with a substantially continuous wall on one side, the filling pieces being held in position by gravity.

9. In combination, a row of tubes and a ballie supported thereon, said baffle comprising hook members extending between the tubes and each having at one end a hook portion extending partially around a tube, and filling pieces between and engaging the other ends of adjacent hook members and forming therewith a permanent structure supported by said hook portions, and filling pieces located between adjacent tiles for securing them in position on the tubes.

10. In combination, a row of tubes and a bafile supported thereon, said bafiie comprising hook members extending between the tubes and each having at one end a hook portion extending partially around a tube and suspended therefrom, the opposite ends of said hook members being flared away from the tubes, and fillings pieces having flared sides engagin the flared sides of the hook members, the filling pieces being held in position by gravity and forming on their lower sides with the lower sides of the hook members a substantially continuous surface.

11. In combination, a row of tubes, a baflle formed of tiles supported on said tubes and comprising hook members having hook portions extending between tubes and par tially around the same to support the battle, there being but one'hook member between any two adjacent tubes, andfilling pieces locatedvbetween adjacent tiles for securing them in position on the tubes.

NORMAN HUBBARD. 

